[VHFcontesting] 222MHZ Transverters

[Tom Carney]

I use a XV-222 also and will confirm the faults Duffey listed.  I tried 
running 20w on FM and blew out the final stage amplifier module.  If you 
look hard enough, you can find a warning/limitation about high duty 
cycle usage in the manual.

Yes, it drifts from cold start.  As James says, likely not a problem for 
a fixed station.  Another, minor problem, it doesn't have a way to make 
a small freq adjustment to the crystal.  My unit is about 2khz high, 
once it settles down.

73,

Tom K6EU



James Duffey wrote:
> I use an Elecraft XV-222 transverter for 222 MHz. It has a very good  
> receiver as it is sensitive and very immune to overload and strong  
> signal intermod.
> 
> Having said that, it has a couple of faults.
> 
> The first is that it runs hot and although 20 Watts out can be run on  
> SSB, it will still run hot, and the power should be probably be held  
> to 10 Watts or so on high duty cycle modes like FM and WSJT. This is  
> not a problem if you have a linear that takes the lower power input.
> 
> The second is that my unit drifts noticeably from a cold start. While  
> probably not a problem for fixed station use, where the power can be  
> left on, in the rover I turn it on only when I go to 222 MHz to  
> conserve power and then it drifts as it never gets warmed up as I am  
> turning it on and off.
> 
> With the K2 it has a nice interface and is if you are using a VHF  
> transceiver. - Duffey
> 
> 
> --
> KK6MC
> James Duffey
> Cedar Crest NM
>